My Grandson Just Lost His Sight For Approximately 2 Minutes.

My grandson just lost his sight for approximately 2 minutes. He has been sick for the past 6 days fever 101.6 has been the highest. Medicated with Tylenol and motrin every 6 hours alternating. Has been to the er and his pc he has hand foot and mouth rash covering his body..he just vomited was shaking and then lost his sight he screamed and was reaching eyes where not focusing